JP2006035278A - Apparatus for bending metal sheet into circular- arcuate shape - Google Patents

Apparatus for bending metal sheet into circular- arcuate shape Download PDF

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JP2006035278A
JP2006035278A JP2004220124A JP2004220124A JP2006035278A JP 2006035278 A JP2006035278 A JP 2006035278A JP 2004220124 A JP2004220124 A JP 2004220124A JP 2004220124 A JP2004220124 A JP 2004220124A JP 2006035278 A JP2006035278 A JP 2006035278A
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mold
arc
metal plate
die
circular
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JP4442354B2 (en
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Yusaku Miyazaki
雄策 宮崎
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Yokohama Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for bending a metal sheet into a circular-arcuate shape with which the positioning of the metal sheet is facilitated and bending work of a uniform circular-arcuate shape is performed efficiently and accurately when the metallic sheet is bent into the circular-arcuate shape. <P>SOLUTION: In this circular-arcuate shape bending apparatus, an upper die 3 and a lower die 4 which can be mutually fit through a fitting part G and are provided with a circular-arcuate working surface having a specified radius of curvature are attachably and detachably mounted to the opposing working and supporting surfaces 1a, 2a of a pair of upper matrix 1 and a lower matrix 2 which are approachable to and separable from each other. In this practical configuration, the lower die 4 is horizontally fixed to the working and supporting surface 2a of the lower matrix 2 by making the circular-arcuate working surface 4a (concave surface) upside, and the upper die 3 making the circular-arcuate working surface 3a (convex surface) downward is hung from the working and supporting surface 1a of the upper matrix 1 on a supporting member 5 which is vertically moved via an elevator which is not shown in the figure on the circular-arcuate working surface 4a (concave surface) of the lower die 4, and the circular-arcuate working surface 3a of the upper die 3 is arranged so as to be approachably to and separably from the circular-arcuate working surface 4a of the lower die 4 by vertically moving the supporting member 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、金属製の板材の円弧状曲げ加工装置にかかわり、更に詳しくは、特に予め打ち抜き加工された小さな板状の金属板を位置決めした状態で所定の曲率で円弧状に精度良く曲げ加工することが出来る金属板の円弧状曲げ加工装置に関するものである。   The present invention relates to an arc-shaped bending apparatus for a metal plate material, and more specifically, accurately performs an arc-shaped bending process with a predetermined curvature in a state where a small plate-shaped metal plate that has been punched in advance is positioned. The present invention relates to an arc-shaped bending apparatus for a metal plate.

金属板の円弧状の曲げ加工方法としては、一般に複数本のロール間に金属材を挿通させて曲げ加工を行うロール曲げ加工方法と、円弧状加工面を備えた上下一対の上型と下型とによりプレスしながら曲げ加工を行うプレス曲げ加工方法とが知られている。ロール曲げ加工方法は、帯状の金属板を連続的に成形する加工方法に用いられ、またタイヤ金型成形用ブレード等の小片の金属板を曲げ加工する場合には、後者のプレス曲げ加工方法が使用される（例えば、特許文献１参照）。   As a method of bending a metal plate in an arc shape, a roll bending method that generally performs bending by inserting a metal material between a plurality of rolls, and a pair of upper and lower upper and lower molds having an arc-shaped processing surface. There is known a press bending method in which bending is performed while pressing. The roll bending method is used as a processing method for continuously forming a strip-shaped metal plate. When bending a small metal plate such as a tire mold forming blade, the latter press bending method is used. Used (see, for example, Patent Document 1).

ところで、プレス曲げ加工方法を行う場合には、予め打ち抜き加工された小片の金属板を、略同一の曲率半径を備えた凸型と凹型で挟み込んで円弧状の曲げ加工を行っている。然しながら、このような曲げ加工の加工時の状態は、図９及び図１０に示すように、凸型１と凹型２とで金属板Ｗを挟み込んで円弧状の曲げ加工を行う際、力の支点が３点曲げ（中心Ｐ1 , 両端Ｐ2 , Ｐ2 、Ｐ3 , Ｐ3 ）となり、金属板Ｗの中央部は歪みを受け易く、両自由端Ｗａ，Ｗｂは歪みを受け難くなる。 By the way, when the press bending method is performed, a small piece of metal plate punched in advance is sandwiched between a convex shape and a concave shape having substantially the same radius of curvature, and an arc-shaped bending process is performed. However, as shown in FIGS. 9 and 10, the state during the bending process is a fulcrum of force when the arc-shaped bending process is performed with the metal plate W sandwiched between the convex mold 1 and the concave mold 2. Becomes a three-point bend (center P 1, both ends P 2, P 2 , P 3, P 3 ), the central portion of the metal plate W is susceptible to distortion, and both free ends Wa, Wb are less susceptible to distortion.

特に、クランクプレスマシンの場合には、製品金型、及びプレスマシンの耐久性を維持するために、上型の下死点を下型に対して、所謂「寸止め」しているので、この傾向が顕著となる。この結果、図１１に示すように、金属板Ｗの両自由端Ｗａ，Ｗｂの曲がりは正規の曲がり（図中実線）に対して曲がりが弱くなり（図中破線）、ある点Ｏから接線方向に伸びるたようになる。   In particular, in the case of a crank press machine, in order to maintain the durability of the product mold and the press machine, the bottom dead center of the upper mold is so-called “dimmed” with respect to the lower mold. The tendency becomes remarkable. As a result, as shown in FIG. 11, the bending of both free ends Wa and Wb of the metal plate W is weaker than the normal bending (solid line in the figure) (broken line in the figure), and the tangential direction from a certain point O It seems to grow.

このような方法により曲げ加工を行ったタイヤ金型成形用ブレードを使用した場合、ダミーサイプと正規の形状で彫られたマスター型のサイプ溝は形状が不一致となってタイヤ製品にゴムバリが発生する。また、鋳込みサイプとマスター溝によって曲げ形状を矯正されて反転されたゴム型のサイプ溝は、形状不一致のために、石膏バリの発生やゴム変形による真円度不良となる問題があった。   When a tire mold forming blade that has been bent by such a method is used, the shape of the dummy sipe and the master sipe groove carved in a regular shape is inconsistent and rubber burrs are generated in the tire product. In addition, the rubber-shaped sipe groove, which has been bent and corrected by the cast sipe and the master groove, has a problem in that the roundness is poor due to the occurrence of gypsum burrs or rubber deformation due to the shape mismatch.

そこで、本願特許出願人は、上記の問題を解決するために、特願２００４−１５５６９６号において、金属板の円弧状の曲げ加工を行う際、均一な円弧状の曲げ加工を効率良く、しかも精度良く行うことが出来る金属板の円弧状曲げ加工方法及びその装置を出願している。   Therefore, in order to solve the above problem, the applicant of the present patent application, in Japanese Patent Application No. 2004-155696, performs a uniform arc-shaped bending process efficiently and accurately when performing the arc-shaped bending process of the metal plate. We have filed an arc-shaped bending method and apparatus for a metal plate that can be performed well.

しかし、本願特許出願人は、上記の特許出願を実施した結果、更に別の新たな課題があることが判った。即ち、上記の特許出願の発明を実施実施した結果、図１２及び図１３に示すように、金属板Ｗは凸型１と凹型２との間で滑りを生じながら曲げ加工されること、また円弧状の凹型２に金属板Ｗを配置しなければ成らないことである。   However, as a result of implementing the above-mentioned patent application, the present patent applicant has found that there is still another new problem. That is, as a result of carrying out the invention of the above-mentioned patent application, as shown in FIGS. 12 and 13, the metal plate W is bent while causing a slip between the convex mold 1 and the concave mold 2. That is, the metal plate W must be arranged in the arc-shaped concave mold 2.

即ち、凹型２上に載置した金属板Ｗは、曲げ加工時には前後左右において何ら位置決めがされていないため、曲げ加工中に金属板Ｗの動きＬが不安定となり曲げ加工後の製品にバラツキが生ずる可能性があり、更に円弧状の凹型２上に平板状の金属板Ｗを配設するので位置が決まり難い上に作業性も悪くなる可能性があり、また金属板Ｗの適正な配置位置からのズレが大きいと凸型１と凹型２とがＸ部分において干渉し金型故障の原因となる可能性があった。
特開２００３−１３６５４１号公報 That is, since the metal plate W placed on the concave mold 2 is not positioned at the front, rear, left and right at the time of bending, the movement L of the metal plate W becomes unstable during bending, and the products after bending are not uniform. Furthermore, since the flat metal plate W is disposed on the arc-shaped concave mold 2, the position is difficult to determine and the workability may be deteriorated. If the deviation from the distance is large, the convex mold 1 and the concave mold 2 may interfere with each other at the X portion, which may cause a mold failure.
JP 2003-136541 A

この発明は、かかる従来の問題点に着目して案出されたもので、金属製の板材の円弧状の曲げ加工を行う際、金属板の位置決めを容易にし、均一な円弧状の曲げ加工を効率良く、しかも精度良く行うことが出来る金属板の円弧状曲げ加工装置を提供することを目的とするものである。   The present invention has been devised by paying attention to such conventional problems. When performing arc-shaped bending of a metal plate material, the metal plate can be easily positioned and uniform arc-shaped bending can be performed. An object of the present invention is to provide an arc-shaped bending apparatus for a metal plate that can be efficiently and accurately performed.

この発明は、上記目的を達成するため、互いに接近離反可能な一対の上部母型と下部母型との相対向する加工支持面に、嵌合部を介して互いに嵌合可能で、かつ所定の曲率半径の円弧状加工面を備えた上型と下型とをそれぞれ着脱可能に装着し、前記上型と下型との一方の円弧状加工面の曲率半径を他方の曲率半径より小さく形成し、前記上型と下型との一方を固定すると共に、他方を揺動可能に取付け、固定側の型に対して可動側の型の長手方向の一端側を支持部材に対して揺動可能に支持すると共に、他端側を支持部材に対して伸縮可能で、かつ揺動可能に支持するように構成し、前記上型と下型との間の嵌合部に金属製の板材を介在させた状態で、前記上部母型と下部母型との少なくとも一方を接近させて前記上型と下型とで前記板材を挟持加圧して円弧状に曲げ加工することを要旨とするものである。   In order to achieve the above-mentioned object, the present invention can be fitted to each other through a fitting portion on the opposite working support surfaces of a pair of upper and lower mother dies that can approach and separate from each other, and has a predetermined An upper die and a lower die having an arcuate machining surface with a radius of curvature are detachably mounted, and the radius of curvature of one arcuate machining surface of the upper die and the lower die is formed smaller than the other radius of curvature. One of the upper mold and the lower mold is fixed and the other is fixed to be swingable, and one end side in the longitudinal direction of the movable mold is swingable with respect to the support mold with respect to the fixed mold. The other end side is configured to be extendable and swingable with respect to the support member, and a metal plate material is interposed in the fitting portion between the upper mold and the lower mold. In this state, the plate material is made up of the upper mold and the lower mold by bringing at least one of the upper mold and the lower mold close to each other. Clamping pressurizes it is an Abstract that bent into an arc shape.

ここで、前記上部母型の加工支持面に所定の曲率半径の円弧状加工面を備えた上型を支持部を着脱可能に固定し、前記下部母型に形成した断面凹状の嵌合部に、位置決め壁を形成する所定の曲率半径の円弧状加工面を備えた下型の支持部を着脱可能に固定するものである。   Here, an upper die having an arcuate machining surface with a predetermined radius of curvature is fixed to the machining support surface of the upper master die so that the support portion can be attached and detached, and the fitting portion having a concave cross section formed on the lower mother die. The lower mold supporting portion having an arc-shaped machining surface having a predetermined curvature radius forming the positioning wall is detachably fixed.

前記一対の上部母型と下部母型とに、上型と下型との位置決め手段及び固定手段を設け、また前記上型と下型との一方の円弧状加工面に、加工する前記板材の位置決めを行う位置決め部材を着脱可能に設け、更に前記下型を嵌合する嵌合部を備えた下部母型を、複数に分割して構成することも可能である。また、金属製の板材が、タイヤ金型成形用のブレードである。   The upper and lower molds are provided with positioning means and fixing means for the upper mold and the lower mold, and the plate material to be machined is formed on one arcuate machining surface of the upper mold and the lower mold. It is also possible to divide and divide the lower mother die provided with a positioning member for positioning so as to be detachable and further provided with a fitting portion for fitting the lower die. The metal plate material is a blade for forming a tire mold.

この発明では上記のように構成したので、金属板の円弧状の曲げ加工を行う際、金属板の位置決めを容易にし、均一な円弧状の曲げ加工を効率良く、しかも精度良く行うことが出来るものである。   Since the present invention is configured as described above, when performing arc-shaped bending of a metal plate, the metal plate can be easily positioned, and uniform arc-shaped bending can be performed efficiently and accurately. It is.

この発明は上記のように互いに接近離反可能な一対の上部母型と下部母型との相対向する加工支持面に、嵌合部を介して互いに嵌合可能で、かつ所定の曲率半径の円弧状加工面を備えた上型と下型とをそれぞれ着脱可能に装着し、前記上型と下型との一方の円弧状加工面の曲率半径を他方の曲率半径より小さく形成し、前記上型と下型との一方を固定すると共に、他方を揺動可能に取付け、固定側の型に対して可動側の型の長手方向の一端側を支持部材に対して揺動可能に支持すると共に、他端側を支持部材に対して伸縮可能で、かつ揺動可能に支持するように構成し、前記上型と下型との間の嵌合部に金属製の板材を介在させた状態で、前記上部母型と下部母型との少なくとも一方を接近させて前記上型と下型とで前記板材を挟持加圧して円弧状に曲げ加工するようにしたので、以下のような優れた効果を奏するものである。
（ａ）金属製の板材の円弧状の曲げ加工を行う際、板材の位置決めを容易にし、均一な円弧状の曲げ加工を効率良く、しかも精度良く行うことが出来る。特にタイヤ金型成形用ブレード等の小片の金属板を曲げ加工した場合、均一な円弧に曲げ加工することが出来、ダミーサイプと正規の形状で彫られたマスター型のサイプ溝は形状が一致し、製品のゴムバリの発生がなく、また鋳込みサイプとマスター溝によって曲げ形状を矯正されて反転されたゴム型のサイプ溝は、形状一致するため、石膏バリの発生やゴム変形による真円度不良の問題もなく安心して使用出来る。
（ｂ）上部母型及び下部母型に対して、上型及び下型の交換が容易であるので、板材の加工状況に対応して金型の段取り替えを容易に行うことが出来る。
（ｃ）加工する金属板が加工時に位置決めされているので、加工寸法が安定し、製品精度を高めることが出来る。
（ｄ）加工する板材の位置決めを容易に行うことが出来るので、作業性を向上させることが出来る。
（ｅ）．装置全体がシンプルであるため、安価に製造できる。 As described above, the present invention is a circle having a predetermined radius of curvature that can be fitted to each other via a fitting portion on the opposing machining support surfaces of a pair of upper and lower mother molds that can approach and separate from each other. An upper mold and a lower mold each having an arcuate machining surface are detachably mounted, and a curvature radius of one arcuate machining surface of the upper mold and the lower mold is smaller than the other curvature radius, and the upper mold And fixing the other of the lower mold and the other mold so as to be swingable, and supporting one end side of the movable mold in the longitudinal direction relative to the fixed mold so as to be swingable relative to the support member, The other end side can be expanded and contracted with respect to the support member, and is configured to be swingably supported, with a metal plate interposed in the fitting portion between the upper mold and the lower mold, At least one of the upper matrix and the lower matrix is brought close to each other and the plate material is sandwiched and pressed between the upper mold and the lower mold. Since so as to bent into an arc shape, in which excellent effects as follows.
(A) When performing arc-shaped bending of a metal plate material, positioning of the plate material can be facilitated, and uniform arc-shaped bending can be performed efficiently and accurately. Especially when a small metal plate such as a tire mold forming blade is bent, it can be bent into a uniform arc, and the master sipe groove carved in a regular shape with the dummy sipe matches the shape, The rubber sipe groove, which has no rubber burrs in the product and the shape of the rubber sipe groove, which has been bent and corrected by the cast sipe and the master groove, matches the shape. It can be used with peace of mind.
(B) Since the upper die and the lower die can be easily exchanged with respect to the upper die and the lower die, the die can be easily changed in accordance with the processing conditions of the plate material.
(C) Since the metal plate to be processed is positioned at the time of processing, the processing dimensions are stabilized and the product accuracy can be improved.
(D) Since the plate material to be processed can be easily positioned, workability can be improved.
(E). Since the entire device is simple, it can be manufactured at low cost.

以下、添付図面に基づきこの発明の実施の形態を説明する。
なお、以下の説明において、従来例と同一構成要素は同一符号を付して説明は省略する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
In the following description, the same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

図１は、この発明を実施した金属板の円弧状曲げ加工装置の一部拡大断面図を示し、この円弧状曲げ加工装置は、互いに接近離反可能な一対の上部母型１と下部母型２との相対向する加工支持面１ａ，２ａに、嵌合部Ｇを介して互いに嵌合可能で、かつ所定の曲率半径の円弧状加工面を備えた上型３と下型４とをそれぞれ着脱可能に装着してある。   FIG. 1 is a partially enlarged cross-sectional view of a metal plate arc bending apparatus embodying the present invention. The arc bending apparatus includes a pair of an upper mother die 1 and a lower mother die 2 that are close to and away from each other. The upper die 3 and the lower die 4 that can be fitted to each other via the fitting portion G and have arc-shaped machining surfaces with a predetermined radius of curvature are attached to and detached from the machining support surfaces 1a and 2a opposite to each other. It is installed as possible.

この実施形態では、下型４を円弧状加工面４ａ（凹面）を上側にして下部母型２の加工支持面２ａに水平に固定し、この下型４の円弧状加工面４ａ（凹面）上に図示しない昇降装置を介して昇降する支持部材５に、円弧状加工面３ａ（凸面）を下向きにした上型３を上部母型１の加工支持面１ａに吊設し、支持部材５を昇降させることにより上型３の円弧状加工面３ａを下型４の円弧状加工面４ａに対して接近離反可能に配設してある。   In this embodiment, the lower die 4 is fixed horizontally to the machining support surface 2a of the lower mother die 2 with the arcuate machining surface 4a (concave surface) on the upper side, and the lower die 4 is arranged on the arcuate machining surface 4a (concave surface). The upper die 3 with the arc-shaped machining surface 3a (convex surface) facing downward is suspended from the machining support surface 1a of the upper mother die 1 on the support member 5 that is raised and lowered via a lifting device (not shown). By doing so, the arcuate machining surface 3a of the upper die 3 is disposed so as to be able to approach and separate from the arcuate machining surface 4a of the lower die 4.

また、この実施形態では、図５に示すように前記下型４の円弧状加工面４ａの曲率半径Ｒｂに対して、上型３の円弧状加工面３ａの曲率半径Ｒａを小さく形成することで、板材Ｗの円弧状の曲げ加工を行う際、全体を均一に円弧状の曲げ加工することが出来る。   Further, in this embodiment, as shown in FIG. 5, the curvature radius Ra of the arcuate machining surface 3a of the upper mold 3 is made smaller than the curvature radius Rb of the arcuate machining surface 4a of the lower mold 4. When the arcuate bending of the plate material W is performed, the entire arc can be bent.

前記支持部材５に対して吊設するカマボコ状の上型３を取付けた上部母型１は、図４（ａ）〜（ｄ）に示すように、上部母型１の一端側１ｘ（先端側）を支持部材５に対してヒンジ６を介して揺動可能に支持すると共に、上部母型１の他端側１ｙ（基端側）を支持部材５に対して伸縮機構７を介して伸縮可能で、かつ揺動可能に支持させて構成してある。   As shown in FIGS. 4 (a) to 4 (d), the upper mother die 1 to which the upper mold 3 suspended from the support member 5 is attached has one end side 1x (front end side) of the upper mother die 1. ) With respect to the support member 5 via the hinge 6 so as to be swingable, and the other end 1 y (base end side) of the upper mother die 1 can be extended with respect to the support member 5 via the extension mechanism 7. And is configured to be swingably supported.

前記伸縮機構７は、支持部材５に形成した貫通孔８にスプリング等の弾性部材９を介してスライダー１０が摺動可能に嵌合され、このスライダー１０に連結ピン１１ａ，１１ｂ及び連結アーム１２を介して上部母型１の他端側１ｙ（基端側）が回転自在に連結されている。   The expansion / contraction mechanism 7 is slidably fitted to a through hole 8 formed in the support member 5 via an elastic member 9 such as a spring, and the connection pins 11 a and 11 b and the connection arm 12 are connected to the slider 10. The other end side 1y (base end side) of the upper mother die 1 is connected rotatably.

そして、前記上型３と下型４との円弧状加工面３ａ，４ａに、予め打ち抜き加工された所定形状の板材Ｗ（例えば、タイヤ金型成形用ブレード等）を介在させ、前記上型３を支持部材５により加工させて挟持加圧しながら円弧状に曲げ加工するものである。   Then, a predetermined-shaped plate material W (for example, a tire mold forming blade) is interposed between the arc-shaped processed surfaces 3a and 4a of the upper mold 3 and the lower mold 4 so that the upper mold 3 Is processed by the support member 5 and bent into an arc shape while being sandwiched and pressurized.

なお、上記下型４を円弧状加工面４ａを凸面にし、上型３の円弧状加工面３ａを凹面にすることも可能であり、また上型３を固定し、下型４を昇降するように構成することも可能である。   It is possible to make the lower die 4 have a convex arcuate surface 4a and a concave arcuate surface 3a of the upper die 3. Also, the upper die 3 is fixed and the lower die 4 is moved up and down. It is also possible to configure.

前記上部母型１の加工支持面１ａに取付けられた所定の曲率半径の円弧状加工面を備えた上型３は、図１及び図２に示すように、位置決め手段及び固定手段を構成する支持部３ｂが固定プレート１３ａ，ボルト１３ｂ，固定ボルト１４を介して着脱可能に取付けられ、上部母型１の加工支持面１ａと上型３の支持部３ｂとは、位置決め及び左右ずれ等を考慮し図７（ａ）〜（ｄ）に示すような係合手段を設けている。   As shown in FIGS. 1 and 2, the upper mold 3 having an arc-shaped machining surface with a predetermined radius of curvature attached to the machining support surface 1a of the upper matrix 1 is a support that constitutes positioning means and fixing means. The part 3b is detachably attached via the fixing plate 13a, the bolt 13b, and the fixing bolt 14, and the processing support surface 1a of the upper base mold 1 and the support part 3b of the upper mold 3 take into consideration positioning and lateral displacement. Engaging means as shown in FIGS. 7A to 7D are provided.

即ち、図７（ａ）に示すように、上部母型１の加工支持面１ａに凹溝１５ａを形成して上型３の支持部３ｂを嵌合させて、前記固定プレート１３ａ，ボルト１３ｂ，固定ボルト１４を介して着脱可能に取付けたり、また（ｂ）に示すように、上部母型１の加工支持面１ａに凸部１５ｂを形成すると共に、上型３の支持部３ｂに凹部３ｃを形成して嵌合させ、前記固定プレート１３ａ，ボルト１３ｂ，固定ボルト１４を介して着脱可能に取付けたり、また（ｃ），（ｄ）に示すように、上部母型１の加工支持面１ａ、または上型３の支持部３ｂに、位置決め用のノックピン１５ｃまたは１５ｄを設けて位置決め固定するように構成することも可能である。   That is, as shown in FIG. 7A, a concave groove 15a is formed on the processing support surface 1a of the upper base 1 and the support portion 3b of the upper mold 3 is fitted to the fixing plate 13a, bolts 13b, As shown in (b), a convex portion 15b is formed on the processing support surface 1a of the upper mother die 1 and a concave portion 3c is formed on the support portion 3b of the upper die 3 as shown in FIG. Formed and fitted, and detachably attached via the fixing plate 13a, bolt 13b, and fixing bolt 14, and as shown in (c) and (d), the processing support surface 1a of the upper mother die 1; Alternatively, a positioning knock pin 15c or 15d may be provided on the support portion 3b of the upper mold 3 so as to be positioned and fixed.

また、下部母型２の加工支持面２ａには、図１及び図３に示すように、所定の曲率半径の円弧状加工面を備えた下型４を着脱可能に装着し、その上面には前記上型３が嵌合する位置決め壁を構成する断面凹状の嵌合部Ｇが形成してあり、前記加工支持面２ａに装着する下型４は、位置決め手段及び固定手段を構成する固定プレート１６ａ，ボルト１６ｂ，固定ボルト１７を介して下部母型２に着脱可能に取付けられている。   Moreover, as shown in FIG.1 and FIG.3, the lower mold | type 4 provided with the circular-arc-shaped process surface of a predetermined curvature radius is attached to the process support surface 2a of the lower mother mold 2 so that attachment or detachment is possible. A fitting portion G having a concave cross section that constitutes a positioning wall to which the upper die 3 is fitted is formed, and the lower die 4 to be mounted on the processing support surface 2a is a fixing plate 16a constituting positioning means and fixing means. , Detachably attached to the lower mother die 2 via bolts 16b and fixing bolts 17.

前記下型４を嵌合する嵌合部Ｇを備えた下部母型２は、図８（ａ）〜（ｄ）に示すように、（ａ），（ｂ）に示すように下部母型２を二分割２ｘ，２ｙまたは２ｚ等の三分割等、複数に分割して構成したり、（ｃ），（ｄ）に示すように断面凹状２Ｖまたは断面Ｌ字状２Ｌに形成することも可能である。   As shown in FIGS. 8A to 8D, the lower mother die 2 having the fitting portion G for fitting the lower die 4 is formed as shown in FIGS. 8A and 8D. Can be divided into a plurality of parts such as two parts 2x, 2y or 2z, or can be formed into a concave section 2V or an L section 2L as shown in (c) and (d). is there.

また、下型４上に載置して曲げ加工する金属製の板材Ｗの位置決め手段としては、図１及び図６（ａ）〜（ｃ）に示すように、下型４の長手方向の一側面上または他側面上に、下型４の湾曲した加工面に沿って形成されたストッパー用の位置決めプレート１８ａまたは１８ｂを取付け、加工時に金属製の板材Ｗが加工方向に移動しないようにしたものである。なお、位置決めプレート１８ａ，１８ｂは、ボルト１９に下型４の側面に着脱可能に取付けるものであり、この位置決めプレート１８ａ，１８ｂの厚さは、板材Ｗの厚さよりも薄い方が望ましい。   Moreover, as a positioning means of the metal plate W placed on the lower mold 4 and bent, as shown in FIGS. 1 and 6 (a) to (c), one in the longitudinal direction of the lower mold 4 is used. A stopper positioning plate 18a or 18b formed along the curved machining surface of the lower die 4 is mounted on the side surface or the other side surface so that the metal plate W does not move in the machining direction during machining. It is. The positioning plates 18a and 18b are detachably attached to the side surfaces of the lower mold 4 on the bolts 19, and the thickness of the positioning plates 18a and 18b is preferably thinner than the thickness of the plate material W.

図４（ａ）〜（ｄ）は、この発明の板材Ｗの円弧状曲げ加工方法の加工工程を示す説明図であり、所定の曲率半径Ｒａ，Ｒｂの円弧状加工面３ａ，４ａを備えた上下一対の上型３と下型４とにより金属製の板材Ｗを円弧状に曲げ加工する場合、先ず、予め打ち抜き加工された所定形状の板材Ｗ（例えば、タイヤ金型成形用ブレード等）を嵌合部Ｇ内に位置する下型４の円弧状加工面４ａ上にストッパー用の位置決めプレート１８ａまたは１８ｂを介して載置し、この状態で、図４（ａ）に示すように、支持部材５に取付けられた上部母材１を介して上型３を下降させる。   4 (a) to 4 (d) are explanatory views showing the processing steps of the arc-shaped bending method for the plate material W of the present invention, and are provided with arc-shaped processing surfaces 3a and 4a having predetermined curvature radii Ra and Rb. When the metal plate material W is bent into an arc shape by the upper and lower pairs of the upper die 3 and the lower die 4, first, a predetermined shape plate material W (for example, a tire mold forming blade) is punched in advance. It is placed on the arcuate processed surface 4a of the lower mold 4 located in the fitting portion G via the stopper positioning plate 18a or 18b, and in this state, as shown in FIG. The upper die 3 is lowered through the upper base material 1 attached to the base 5.

上型３は、同図のように、伸縮機構７により上部母材１の他端側１ｂ（基端側）が下方に突出しているので、支持部材５の下降により先ず上型３の他端側が断面凹状の嵌合部Ｇ内に位置する下型４の円弧状加工面４ａ上に載置された板材Ｗの一端側に当接する。   As shown in the figure, the upper mold 3 is such that the other end side 1b (base end side) of the upper base material 1 is projected downward by the expansion / contraction mechanism 7, so that the lower end of the support member 5 first lowers the other end of the upper mold 3 first. The side abuts on one end side of the plate material W placed on the arcuate processed surface 4a of the lower mold 4 located in the fitting section G having a concave cross section.

そして、図４（ｂ）に示すように、支持部材５を更に下降させると、上型３の他端側は、板材Ｗの一端側に当接した状態で伸縮機構７の弾性部材９を圧縮させるように貫通孔８に嵌合されたスライダー１０が上方にスライドし、また上型３の一端側（先端側）は下降する。   Then, as shown in FIG. 4B, when the support member 5 is further lowered, the other end side of the upper mold 3 compresses the elastic member 9 of the expansion / contraction mechanism 7 in a state of being in contact with one end side of the plate material W. The slider 10 fitted in the through-hole 8 is slid upward so that one end side (tip side) of the upper mold 3 is lowered.

そして、図４（ｃ）に示すように、支持部材５を更に下降させると、上型３は位置決めされた板材Ｗに当接した状態で、ヒンジ６を支点として揺動を開始し、支持部材５の下降に伴って上型３は図４（ｄ）に示すように、下型４の円弧状加工面４ａに沿って揺動しながら板材Ｗを曲げ加工すると共に、その成形支点（曲げ加工する点）を上型１のヒンジ６に向かって移動して曲げ加工を完了させる。この上型３の揺動状態を詳細に示したのが、上述した図５の説明図である。   Then, as shown in FIG. 4C, when the support member 5 is further lowered, the upper die 3 starts swinging with the hinge 6 as a fulcrum in a state where the upper die 3 is in contact with the positioned plate member W, and the support member When the upper die 3 is lowered, the upper die 3 bends the plate material W while swinging along the arcuate machining surface 4a of the lower die 4, as shown in FIG. Is moved toward the hinge 6 of the upper mold 1 to complete the bending process. The swing state of the upper mold 3 is shown in detail in the explanatory view of FIG. 5 described above.

そして、板材Ｗの曲げ加工完了後に、支持部材５を上昇させると、上部母材１を介して上型３の一端側（先端側）は支持部材５と共に上昇し、また上型３の他端側（基端側）は、伸縮機構７の弾性部材９により下方に押圧されながら、図４（ａ）の状態となる。   Then, when the support member 5 is raised after the bending of the plate material W is completed, one end side (front end side) of the upper die 3 rises together with the support member 5 via the upper base material 1, and the other end of the upper die 3 The side (base end side) is in the state shown in FIG. 4A while being pressed downward by the elastic member 9 of the expansion and contraction mechanism 7.

なお、前記金属製の板材Ｗとしては、この実施形態では、予め打ち抜き加工された板状のタイヤ金型成形用ブレードである。   In this embodiment, the metal plate W is a plate-shaped tire mold forming blade that has been punched in advance.

以上のように、互いに接近離反可能な一対の上部母型１と下部母型２との相対向する加工支持面１ａ，２ａに、嵌合部Ｇを介して互いに嵌合可能で、かつ所定の曲率半径の円弧状加工面３ａ，４ａを備えた上型３と下型４とをそれぞれ着脱可能に装着し、前記上型３と下型４との一方の円弧状加工面３ａ，４ａの曲率半径を他方の曲率半径より小さく形成し、前記上型３と下型４との一方を固定すると共に、他方を揺動可能に取付け、固定側の型に対して可動側の型の長手方向の一端側を支持部材５に対して揺動可能に支持すると共に、他端側を支持部材５に対して伸縮可能で、かつ揺動可能に支持するように構成し、前記上型３と下型４との間の嵌合部Ｇに金属製の板材Ｗを介在させた状態で、前記上部母型１と下部母型２との少なくとも一方を接近させて前記上型３と下型４とで前記板材Ｗを挟持加圧して円弧状に曲げ加工するようにしたので、金属製の板材Ｗの円弧状の曲げ加工を行う際、板材Ｗの位置決めを容易にし、均一な円弧状の曲げ加工を効率良く、しかも精度良く行うことが出来る。   As described above, the processing support surfaces 1a and 2a of the pair of upper mother die 1 and lower mother die 2 that can approach and separate from each other can be fitted to each other via the fitting portion G, and a predetermined amount can be obtained. An upper die 3 and a lower die 4 each having an arcuate processing surface 3a, 4a having a radius of curvature are detachably mounted, and the curvature of one arcuate processing surface 3a, 4a of the upper die 3 and the lower die 4 is mounted. A radius is formed smaller than the other radius of curvature, and one of the upper mold 3 and the lower mold 4 is fixed, and the other is slidably mounted, and is movable in the longitudinal direction of the movable mold with respect to the fixed mold. The upper mold 3 and the lower mold are configured such that one end side is swingably supported with respect to the support member 5 and the other end side is extendable and swingable with respect to the support member 5. 4 with at least the upper mother die 1 and the lower mother die 2 in a state where a metal plate W is interposed in the fitting portion G between the upper mother die 1 and the lower mother die 2. Since the plate material W is sandwiched and pressed between the upper mold 3 and the lower mold 4 and bent into an arc shape, the plate material is bent when the metal plate material W is bent in an arc shape. W positioning can be facilitated, and uniform arc-shaped bending can be performed efficiently and accurately.

特にタイヤ金型成形用ブレード等の小片の板材Ｗを曲げ加工した場合、均一な円弧に曲げ加工することが出来、ダミーサイプと正規の形状で彫られたマスター型のサイプ溝は形状が一致し、製品のゴムバリの発生がなく、また鋳込みサイプとマスター溝によって曲げ形状を矯正されて反転されたゴム型のサイプ溝は、形状一致するため、石膏バリの発生やゴム変形による真円度不良の問題もなく安心して使用出来る。   In particular, when a small piece of plate material W such as a tire mold forming blade is bent, it can be bent into a uniform arc, and the shape of the dummy sipe and the master sipe groove carved in a regular shape match. The rubber sipe groove, which has no rubber burrs in the product and the shape of the rubber sipe groove, which has been bent and corrected by the cast sipe and the master groove, matches the shape. It can be used with peace of mind.

また、上部母型１及び下部母型２に対して、上型３及び下型４の交換が容易であるので、板材Ｗの曲げ加工に対応して金型の段取り替えを容易に行うことが出来、更に加工する金属板が加工時に位置決めされているので、加工寸法が安定し、製品精度を高めることが出来る。また、加工する金属板の位置決めを容易に行うことが出来るので、作業性を向上させることが出来る。   In addition, since the upper die 3 and the lower die 4 can be easily exchanged with respect to the upper die 1 and the lower die 2, the die can be easily replaced corresponding to the bending process of the plate material W. Further, since the metal plate to be further processed is positioned at the time of processing, the processing dimension is stabilized and the product accuracy can be improved. Moreover, since the metal plate to be processed can be easily positioned, workability can be improved.

この発明を実施した金属製の板材の円弧状曲げ加工装置の一部拡大断面図である。It is a partial expanded sectional view of the circular arc bending apparatus of the metal board | plate material which implemented this invention. 上部母型に取付けられた上型と、下部母型に取付けられた下型との側面図である。It is a side view of the upper mold attached to the upper mother mold and the lower mold attached to the lower mother mold. 下部母型に取付けられた下型の一部斜視図である。It is a partial perspective view of the lower mold | type attached to the lower mother mold. （ａ）〜（ｄ）は、この発明の金属製の板材の円弧状曲げ加工方法の加工工程を示す説明図である。(A)-(d) is explanatory drawing which shows the process of the arc-shaped bending method of the metal board | plate material of this invention. 金属製の板材の円弧状曲げ加工時における上部母型に取付けられた上型の作動工程状態を示す説明図である。It is explanatory drawing which shows the operation | movement process state of the upper mold | type attached to the upper mother block at the time of the circular arc-shaped bending process of metal board | plate materials. （ａ），（ｂ），（ｃ）は、下部母型に取付けられた下型上に設けるストッパー用の位置決めプレートの各実施形態の説明図である。(A), (b), (c) is explanatory drawing of each embodiment of the positioning plate for stoppers provided on the lower mold | type attached to the lower mother mold. （ａ），（ｂ），（ｃ），（ｄ）は、上部母型の加工支持面と上型との係合状態を示す各実施形態の説明図である。(A), (b), (c), (d) is explanatory drawing of each embodiment which shows the engagement state of the process support surface of an upper mother die, and an upper mold | type. （ａ），（ｂ），（ｃ），（ｄ）は、下部母型の各実施形態の説明図である。(A), (b), (c), (d) is explanatory drawing of each embodiment of a lower mother mold. 従来の金属板の円弧状曲げ加工方法の説明図である。It is explanatory drawing of the arc-shaped bending method of the conventional metal plate. 従来の金属板の円弧状曲げ加工方法の説明図である。It is explanatory drawing of the arc-shaped bending method of the conventional metal plate. 従来の円弧状に曲げ加工された金属板の説明図である。It is explanatory drawing of the metal plate bent to the conventional circular arc shape. 従来の金属板の円弧状曲げ加工時の作動説明図である。It is operation | movement explanatory drawing at the time of the arc-shaped bending process of the conventional metal plate. 従来の金属板の円弧状曲げ加工時の作動説明図である。It is operation | movement explanatory drawing at the time of the arc-shaped bending process of the conventional metal plate.

符号の説明Explanation of symbols

１ 上部母型 １ａ 加工支持面
１ｘ 一端側 １ｙ 他端側
２ 下部母型 ２ａ 加工支持面
２ｘ，２ｙ 下部母型の二分割 ２ｚ 下部母型の三分割
２Ｖ 断面凹状 ２Ｌ 断面Ｌ字状
３ 上型（凸型） ３ａ 円弧状加工面
４ 下型（凹型） ３ａ 円弧状加工面
Ｗ 金属製の板材（金属板） Ｗａ，Ｗｂ 自由端
５ 支持部材
６ ヒンジ ７ 伸縮機構
８ 貫通孔 ９ 弾性部材
１０ スライダー １１ａ，１１ｂ 連結ピン
１２ 連結アーム Ｒａ，Ｒｂ 曲率半径
１３ａ 固定プレート １３ｂ ボルト
１４ 固定ボルト １５ａ 凹溝
１５ｂ 凸部 １５ｃ，１５ｄ 位置決め用のノックピン
１６ａ 固定プレート １６ｂ ボルト
１７ 固定ボルト １８ａ，１８ｂ 位置決めプレート
１９ ボルト
DESCRIPTION OF SYMBOLS 1 Upper mother block 1a Processing support surface 1x One end side 1y Other end side 2 Lower mother block 2a Processing support surface 2x, 2y Two divisions of lower mother block 2z Three divisions of lower mother block 2V Recessed section 2L Section L shape 3 Upper mold (Convex) 3a Arc-shaped machining surface 4 Lower mold (concave) 3a Arc-shaped machining surface W Metal plate material (metal plate) Wa, Wb Free end 5 Support member 6 Hinge 7 Extending mechanism 8 Through hole 9 Elastic member 10 Slider 11a, 11b Connecting pin 12 Connecting arm Ra, Rb Curvature radius 13a Fixing plate 13b Bolt 14 Fixing bolt 15a Concave groove 15b Protruding portion 15c, 15d Positioning knock pin 16a Fixing plate 16b Bolt 17 Fixing bolt 18a, 18b Positioning plate 19 Bolt

Claims (6)

互いに接近離反可能な一対の上部母型と下部母型との相対向する加工支持面に、嵌合部を介して互いに嵌合可能で、かつ所定の曲率半径の円弧状加工面を備えた上型と下型とをそれぞれ着脱可能に装着し、前記上型と下型との一方の円弧状加工面の曲率半径を他方の曲率半径より小さく形成し、前記上型と下型との一方を固定すると共に、他方を揺動可能に取付け、固定側の型に対して可動側の型の長手方向の一端側を支持部材に対して揺動可能に支持すると共に、他端側を支持部材に対して伸縮可能で、かつ揺動可能に支持するように構成し、前記上型と下型との間の嵌合部に金属製の板材を介在させた状態で、前記上部母型と下部母型との少なくとも一方を接近させて前記上型と下型とで前記板材を挟持加圧して円弧状に曲げ加工することを特徴とする金属板の円弧状曲げ加工装置。 A pair of upper and lower molds that can approach and separate from each other have opposing machining support surfaces that can be fitted to each other via a fitting portion and have arc-shaped machining surfaces with a predetermined radius of curvature. A mold and a lower mold are detachably mounted, a radius of curvature of one arcuate machining surface of the upper mold and the lower mold is formed smaller than the other radius of curvature, and one of the upper mold and the lower mold is While fixing, the other is attached so as to be able to swing, and one end side of the movable die in the longitudinal direction is supported so as to be swingable with respect to the support member, and the other end side is used as the support member. The upper mother mold and the lower mother are configured to be supported so as to be extendable and swingable with a metal plate interposed in a fitting portion between the upper mold and the lower mold. At least one of the molds is brought close to the upper mold and the lower mold to sandwich and press the plate material and bend it into an arc shape. Arcuate bending apparatus of a metal plate, wherein. 前記上部母型の加工支持面に所定の曲率半径の円弧状加工面を備えた上型を支持部を着脱可能に固定し、前記下部母型に形成した断面凹状の嵌合部に、位置決め壁を形成する所定の曲率半径の円弧状加工面を備えた下型の支持部を着脱可能に固定した請求項１に記載の金属板の円弧状曲げ加工装置。 An upper mold having an arc-shaped machining surface with a predetermined radius of curvature on the machining support surface of the upper matrix is detachably fixed to a support part, and a positioning wall is fitted to a concave fitting section formed on the lower matrix. The metal plate arc-shaped bending apparatus according to claim 1, wherein the lower mold support portion having an arc-shaped machining surface having a predetermined radius of curvature is detachably fixed. 前記一対の上部母型と下部母型とに、上型と下型との位置決め手段及び固定手段を設けた請求項１または２に記載の金属板の円弧状曲げ加工装置。 The metal plate arc-shaped bending apparatus according to claim 1 or 2, wherein positioning means and fixing means for the upper mold and the lower mold are provided on the pair of upper and lower molds. 前記上型と下型との一方の円弧状加工面に、加工する前記板材の位置決めを行う位置決め部材を着脱可能に設けた請求項１，２または３に記載の金属板の円弧状曲げ加工装置。 The metal plate arc-shaped bending apparatus according to claim 1, 2 or 3, wherein a positioning member for positioning the plate material to be processed is detachably provided on one arc-shaped machining surface of the upper mold and the lower mold. . 前記下型を嵌合する嵌合部を備えた下部母型を、複数に分割して構成した請求項１，２，３または４に記載の金属板の円弧状曲げ加工装置。 The arc-shaped bending apparatus for a metal plate according to claim 1, 2, 3, or 4, wherein a lower mother die having a fitting portion for fitting the lower die is divided into a plurality of parts. 前記金属製の板材が、タイヤ金型成形用のブレードである請求項１，２，３，４または５に記載の金属板の円弧状曲げ加工装置。
The metal plate arc bending apparatus according to claim 1, 2, 3, 4 or 5, wherein the metal plate material is a blade for forming a tire mold.
JP2004220124A 2004-07-28 2004-07-28 Arc bending machine for metal plate Expired - Fee Related JP4442354B2 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102463276A (en) * 2010-11-15 2012-05-23 中国北车集团大同电力机车有限责任公司 Manufacturing method of a bent part and bending machine
CN103418692A (en) * 2013-08-12 2013-12-04 太仓市微贯机电有限公司 Arc-shaped workpiece machining die
WO2014003231A1 (en) * 2012-06-25 2014-01-03 한국기계연구원 Method for forming curved surface of thick aluminum plate having three-dimensional curvature
CN104624801A (en) * 2015-01-29 2015-05-20 上海外高桥造船海洋工程有限公司 Pressing die special for machining curved plates
CN108015129A (en) * 2018-01-16 2018-05-11 太原科技大学 A kind of portable autoroute backplate trimmer
CN108136480A (en) * 2015-11-12 2018-06-08 住友电装株式会社 The manufacturing method of metal wire ribbon-shaped members comprising joint portion, the manufacturing method of the metal wire ribbon-shaped members with terminal, mold and the metal wire ribbon-shaped members comprising joint portion
CN108971305A (en) * 2018-07-03 2018-12-11 芜湖同创模具机械有限公司 A kind of down-pressing type curved plate processing unit (plant)
CN109127836A (en) * 2018-07-03 2019-01-04 芜湖同创模具机械有限公司 A kind of stamping equipment of curved plate

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102463276A (en) * 2010-11-15 2012-05-23 中国北车集团大同电力机车有限责任公司 Manufacturing method of a bent part and bending machine
WO2014003231A1 (en) * 2012-06-25 2014-01-03 한국기계연구원 Method for forming curved surface of thick aluminum plate having three-dimensional curvature
CN103418692A (en) * 2013-08-12 2013-12-04 太仓市微贯机电有限公司 Arc-shaped workpiece machining die
CN104624801A (en) * 2015-01-29 2015-05-20 上海外高桥造船海洋工程有限公司 Pressing die special for machining curved plates
CN108136480A (en) * 2015-11-12 2018-06-08 住友电装株式会社 The manufacturing method of metal wire ribbon-shaped members comprising joint portion, the manufacturing method of the metal wire ribbon-shaped members with terminal, mold and the metal wire ribbon-shaped members comprising joint portion
CN108136480B (en) * 2015-11-12 2019-11-12 住友电装株式会社 The manufacturing method of metal wire ribbon-shaped members and its manufacturing method comprising joint portion and the metal wire ribbon-shaped members with terminal
CN108015129A (en) * 2018-01-16 2018-05-11 太原科技大学 A kind of portable autoroute backplate trimmer
CN108971305A (en) * 2018-07-03 2018-12-11 芜湖同创模具机械有限公司 A kind of down-pressing type curved plate processing unit (plant)
CN109127836A (en) * 2018-07-03 2019-01-04 芜湖同创模具机械有限公司 A kind of stamping equipment of curved plate

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